Oops, it doesn't look like 'black larry day' is a national day..

Other days

buddy

Buddy Day
hoodie

Hoodie Day
blanket fort

Blanket Fort Day
ponytail

Ponytail Day
brow

Brow Day
ruby

Ruby Day
lost sock memorial

Lost Sock Memorial Day
mean girls

Mean Girls Day
my little pony

My Little Pony Day
kale

Kale Day